Feedforward control of electron spin qubits in quantum dots

• Project/Area Number: 18H01819
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 28020:Nanostructural physics-related
• Research Institution: Institute of Physical and Chemical Research
• Principal Investigator: 中島 峻 国立研究開発法人理化学研究所, 創発物性科学研究センター, 上級研究員 (60534344)
• Co-Investigator(Kenkyū-buntansha): 樽茶 清悟 国立研究開発法人理化学研究所, 創発物性科学研究センター, グループディレクター (40302799)
• Project Period (FY): 2018-04-01 – 2023-03-31
• Project Status: Completed (Fiscal Year 2022)
• Budget Amount: ¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000); Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2021: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000); Fiscal Year 2020: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000); Fiscal Year 2019: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2018: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
• Keywords: 量子ドット / 電子スピン / 量子ビット / 量子コンピュータ / シリコン / 誤り訂正 / 量子コヒーレンス

Outline of Annual Research Achievements

近年、新しいパラダイムにより超高速計算を可能にする量子コンピュータの実現が切望されており、集積化に有利とされるシリコン(Si)基板の量子ドットデバイスによる量子コンピュータの実装研究が進められている。しかしながら現実の量子ビットには様々なエラーが伴うため、エラーを検出し訂正することのできる物理的機構や制御回路の実現が必要である。本課題では、量子エラー訂正回路をはじめ様々なエラーの抑制・訂正に必要とされるフィードフォワード・フィードバック制御技術の基盤を確立することを目標としている。
2022年度は、Si量子ドットデバイスにおいて量子ビットへの影響が大きい電気雑音の制御に注力した。その影響が特に大きくなる2ビットゲート操作時に、電気雑音の影響による量子ビット周波数ずれを検出し、量子ビット制御電圧にフィードバックすることによって2ビット操作時の位相コヒーレンスを改善する実験を実施した。これに関連して、クーロン相互作用により近傍の量子ビットにおける雑音が一定の相関を有することを明らかにし、その影響を定量的に評価する手法を確立した。また、量子ビットの状態を測定しその結果に応じて制御パルスにフィードバックすることにより、量子ビットのアクティブリセット（初期化）を実現した。これと並行して３つの量子ビットを用いた測定によらない位相エラー訂正の実証実験も報告した。これらの技術を組み合わせることによって、測定ベースの量子エラー訂正を実現する基盤技術を確立することができた。

Research Progress Status

令和4年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和4年度が最終年度であるため、記入しない。

Research Products

• [Int'l Joint Research] TUDelft(オランダ)
• [Int'l Joint Research] Ruhr-University Bochum(ドイツ)
• [Int'l Joint Research] The University of Sydney(オーストラリア)
• [Int'l Joint Research] TUDelft(オランダ)
• [Int'l Joint Research] Ruhr-University Bochum(ドイツ)
• [Int'l Joint Research] Ruhr-University Bochum(ドイツ)
• [Int'l Joint Research] University of Basel(スイス)
• [Int'l Joint Research] Ruhr-University Bochum(ドイツ)
• [Int'l Joint Research] University at Buffalo(米国)
• [Int'l Joint Research] University of Basel(スイス)
• [Journal Article] Hamiltonian phase error in resonantly driven CNOT gate above the fault-tolerant threshold (2024)
  • Author(s): Wu Yi-Hsien、Camenzind Leon C.、Noiri Akito、Takeda Kenta、Nakajima Takashi、Kobayashi Takashi、Chang Chien-Yuan、Sammak Amir、Scappucci Giordano、Goan Hsi-Sheng、Tarucha Seigo
  • Journal Title: npj Quantum Information Volume: 10 Issue: 1 Pages: 8-8
  • DOI: 10.1038/s41534-023-00802-9
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Rapid single-shot parity spin readout in a silicon double quantum dot with fidelity exceeding 99% (2024)
  • Author(s): Takeda Kenta、Noiri Akito、Nakajima Takashi、Camenzind Leon C.、Kobayashi Takashi、Sammak Amir、Scappucci Giordano、Tarucha Seigo
  • Journal Title: npj Quantum Information Volume: 10 Issue: 1 Pages: 22-22
  • DOI: 10.1038/s41534-024-00813-0
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Feedback-based active reset of a spin qubit in silicon (2023)
  • Author(s): Kobayashi T.、Nakajima T.、Takeda K.、Noiri A.、Yoneda J.、Tarucha S.
  • Journal Title: npj Quantum Information Volume: 9 Issue: 1 Pages: 52-52
  • DOI: 10.1038/s41534-023-00719-3
  • Peer Reviewed / Open Access
• [Journal Article] Noise-correlation spectrum for a pair of spin qubits in silicon (2023)
  • Author(s): Yoneda J.、Rojas-Arias J. S.、Stano P.、Takeda K.、Noiri A.、Nakajima T.、Loss D.、Tarucha S.
  • Journal Title: Nature Physics Volume: 19 Issue: 12 Pages: 1793-1798
  • DOI: 10.1038/s41567-023-02238-6
  • Peer Reviewed
• [Journal Article] Dynamical nuclear spin polarization in a quantum dot with an electron spin driven by electric dipole spin resonance (2023)
  • Author(s): Stano Peter、Nakajima Takashi、Noiri Akito、Tarucha Seigo、Loss Daniel
  • Journal Title: Physical Review B Volume: 108 Issue: 15 Pages: 155306-155306
  • DOI: 10.1103/physrevb.108.155306
  • Peer Reviewed
• [Journal Article] Spatial noise correlations beyond nearest neighbors in 28Si/Si-Ge spin qubits (2023)
  • Author(s): Rojas-Arias J.S.、Noiri A.、Stano P.、Nakajima T.、Yoneda J.、Takeda K.、Kobayashi T.、Sammak A.、Scappucci G.、Loss D.、Tarucha S.
  • Journal Title: Physical Review Applied Volume: 20 Issue: 5 Pages: 054024-054024
  • DOI: 10.1103/physrevapplied.20.054024
  • Peer Reviewed
• [Journal Article] Quantum error correction with silicon qubits (2022)
  • Author(s): K. Takeda、A. Noiri、T. Nakajima、T. Kobayashi、S. Tarucha
  • Journal Title: Nature Volume: 608 Issue: 7924 Pages: 682-686
  • DOI: 10.1038/s41586-022-04986-6
  • Peer Reviewed / Open Access
• [Journal Article] A shuttling-based two-qubit logic gate for linking distant silicon quantum processors (2022)
  • Author(s): A. Noiri、K. Takeda、T. Nakajima、T. Kobayashi、A. Sammak、G. Scappucci、S. Tarucha
  • Journal Title: Nature Communications Volume: 13 Issue: 1 Pages: 5740-5740
  • DOI: 10.1038/s41467-022-33453-z
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Fast universal quantum gate above the fault-tolerance threshold in silicon (2022)
  • Author(s): Noiri Akito、Takeda Kenta、Nakajima Takashi、Kobayashi Takashi、Sammak Amir、Scappucci Giordano、Tarucha Seigo
  • Journal Title: Nature Volume: 601 Issue: 7893 Pages: 338-342
  • DOI: 10.1038/s41586-021-04182-y
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Probabilistic teleportation of a quantum dot spin qubit (2021)
  • Author(s): Y. Kojima, T. Nakajima, A. Noiri, J. Yoneda, T. Otsuka, K. Takeda, S. Li, S. D. Bartlett, A. Ludwig, A. D. Wieck and S. Tarucha
  • Journal Title: npj Quantum Information Volume: - Issue: 1 Pages: 68-68
  • DOI: 10.1038/s41534-021-00403-4
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Quantum tomography of an entangled three-qubit state in silicon (2021)
  • Author(s): Kenta Takeda、Akito Noiri、Takashi Nakajima、Jun Yoneda、Takashi Kobayashi、Seigo Tarucha
  • Journal Title: Nature Nanotechnology Volume: 16 Issue: 9 Pages: 965-969
  • DOI: 10.1038/s41565-021-00925-0
  • Peer Reviewed
• [Journal Article] Preparation and Readout of Multielectron High-Spin States in a Gate-Defined GaAs/AlGaAs Quantum Dot (2021)
  • Author(s): H. Kiyama, K. Yoshimi, T. Kato, T. Nakajima, A. Oiwa, and S. Tarucha
  • Journal Title: Physical Review Letters Volume: 127 Issue: 8 Pages: 086802-086802
  • DOI: 10.1103/physrevlett.127.086802
  • Peer Reviewed
• [Journal Article] Designs for a two-dimensional Si quantum dot array with spin qubit addressability (2021)
  • Author(s): M. Tadokoro, T. Nakajima, T. Kobayashi, K. Takeda, A. Noiri, K. Tomari, J. Yoneda, S. Tarucha and T. Kodera
  • Journal Title: Scientific Reports Volume: 11 Issue: 1 Pages: 19406-19406
  • DOI: 10.1038/s41598-021-98212-4
  • Peer Reviewed / Open Access
• [Journal Article] Gate voltage dependence of noise distribution in radio-frequency reflectometry in gallium arsenide quantum dots (2021)
  • Author(s): Shinozaki Motoya、Muto Yui、Kitada Takahito、Nakajima Takashi、Delbecq Matthieu R.、Yoneda Jun、Takeda Kenta、Noiri Akito、Ito Takumi、Ludwig Arne、Wieck Andreas D.、Tarucha Seigo、Otsuka Tomohiro
  • Journal Title: Applied Physics Express Volume: 14 Issue: 3 Pages: 035002-035002
  • DOI: 10.35848/1882-0786/abe41f
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Real-Time Feedback Control of Charge Sensing for Quantum Dot Qubits (2021)
  • Author(s): Nakajima Takashi、Kojima Yohei、Uehara Yoshihiro、Noiri Akito、Takeda Kenta、Kobayashi Takashi、Tarucha Seigo
  • Journal Title: Physical Review Applied Volume: 15 Issue: 3
  • DOI: 10.1103/physrevapplied.15.l031003
  • Peer Reviewed / Open Access
• [Journal Article] Radio-Frequency-Detected Fast Charge Sensing in Undoped Silicon Quantum Dots (2020)
  • Author(s): Noiri Akito、Takeda Kenta、Yoneda Jun、Nakajima Takashi、Kodera Tetsuo、Tarucha Seigo
  • Journal Title: Nano Letters Volume: 20 Issue: 2 Pages: 947-952
  • DOI: 10.1021/acs.nanolett.9b03847
  • Peer Reviewed
• [Journal Article] Quantum non-demolition readout of an electron spin in silicon (2020)
  • Author(s): Yoneda J.、Takeda K.、Noiri A.、Nakajima T.、Li S.、Kamioka J.、Kodera T.、Tarucha S.
  • Journal Title: Nature Communications Volume: 11 Issue: 1 Pages: 1-7
  • DOI: 10.1038/s41467-020-14818-8
  • Peer Reviewed / Open Access
• [Journal Article] Coherence of a Driven Electron Spin Qubit Actively Decoupled from Quasistatic Noise (2020)
  • Author(s): Nakajima Takashi、Noiri Akito、Kawasaki Kento、Yoneda Jun、Stano Peter、Amaha Shinichi、Otsuka Tomohiro、Takeda Kenta、Delbecq Matthieu R.、Allison Giles、Ludwig Arne、Wieck Andreas D.、Loss Daniel、Tarucha Seigo
  • Journal Title: Physical Review X Volume: 10 Issue: 1 Pages: 011060-011060
  • DOI: 10.1103/physrevx.10.011060
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Resonantly Driven Singlet-Triplet Spin Qubit in Silicon (2020)
  • Author(s): Takeda K.、Noiri A.、Yoneda J.、Nakajima T.、Tarucha S.
  • Journal Title: Physical Review Letters Volume: 124 Issue: 11 Pages: 1-5
  • DOI: 10.1103/physrevlett.124.117701
  • Peer Reviewed
• [Journal Article] Spin-orbit assisted spin funnels in DC transport through a physically defined pMOS double quantum dot (2019)
  • Author(s): Marian Marx, Jun Yoneda, Tomohiro Otsuka, Kenta Takeda, Yu Yamaoka, Takashi Nakajima, Sen Li, Akito Noiri, Tetsuo Kodera, and Seigo Tarucha
  • Journal Title: Japanese Journal of Applied Physics Volume: 58 Issue: SB Pages: SBBI07-SBBI07
  • DOI: 10.7567/1347-4065/ab01d6
  • NAID: 210000155620
  • Peer Reviewed
• [Journal Article] Quantum non-demolition measurement of an electron spin qubit (2019)
  • Author(s): Takashi Nakajima, Akito Noiri, Jun Yoneda, Matthieu R. Delbecq, Peter Stano, Tomohiro Otsuka, Kenta Takeda, Shinichi Amaha, Giles Allison, Kento Kawasaki, Arne Ludwig, Andreas D. Wieck, Daniel Loss, and Seigo Tarucha
  • Journal Title: Nature Nanotechnology Volume: 未定 Issue: 6 Pages: 555-560
  • DOI: 10.1038/s41565-019-0426-x
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Difference in charge and spin dynamics in a quantum dot-lead coupled system (2019)
  • Author(s): Tomohiro Otsuka, Takashi Nakajima, Matthieu R. Delbecq, Peter Stano, Shinichi Amaha, Jun Yoneda, Kenta Takeda, Giles Allison, Sen Li, Akito Noiri, Takumi Ito, Daniel Loss, Arne Ludwig, Andreas D. Wieck, and Seigo Tarucha
  • Journal Title: Physical Review B Volume: 99 Issue: 8 Pages: 85402-85402
  • DOI: 10.1103/physrevb.99.085402
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Coherent transfer of electron spin correlations assisted by dephasing noise (2018)
  • Author(s): Takashi Nakajima, Matthieu R. Delbecq, Tomohiro Otsuka, Shinichi Amaha, Jun Yoneda, Akito Noiri, Kenta Takeda, Giles Allison, Arne Ludwig, Andreas D. Wieck, Xuedong Hu, Franco Nori, and Seigo Tarucha
  • Journal Title: Nature Communications Volume: 9 Issue: 1 Pages: 2133-2133
  • DOI: 10.1038/s41467-018-04544-7
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Four single-spin Rabi oscillations in a quadruple quantum dot (2018)
  • Author(s): Takumi Ito, Tomohiro Otsuka, Takashi Nakajima, Matthieu R. Delbecq, Shinichi Amaha, Jun Yoneda, Kenta Takeda, Akito Noiri, Giles Allison, Arne Ludwig, Andreas D. Wieck, and Seigo Tarucha
  • Journal Title: Applied Physics Letters Volume: 113 Issue: 9 Pages: 93101-93101
  • DOI: 10.1063/1.5040280
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Optimized electrical control of a Si/SiGe spin qubit in the presence of an induced frequency shift (2018)
  • Author(s): K. Takeda, J. Yoneda, T. Otsuka, T. Nakajima, M. R. Delbecq, G. Allison, Y. Hoshi, N. Usami, K. M. Itoh, S. Oda, T. Kodera and S. Tarucha
  • Journal Title: npj Quantum Information Volume: 4 Issue: 1 Pages: 54-54
  • DOI: 10.1038/s41534-018-0105-z
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A fast quantum interface between different spin qubit encodings (2018)
  • Author(s): Akito Noiri, Takashi Nakajima, Jun Yoneda, Matthieu R. Delbecq, Peter Stano, Tomohiro Otsuka, Kenta Takeda, Shinichi Amaha, Giles Allison, Kento Kawasaki, Arne Ludwig, Andreas D. Wieck, and Seigo Tarucha
  • Journal Title: Nature Communications Volume: 9 Issue: 1 Pages: 5066-5066
  • DOI: 10.1038/s41467-018-07522-1
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] シリコン量子コンピュータによる小規模量子演算の実装と課題 (2023)
  • Author(s): 中島 峻
  • Organizer: 第106回産研テクノサロン
  • Invited
• [Presentation] 離れたシリコン量子プロセッサ間の量子接続に向けた単一電子スピンシャトルによる2量子ビットゲート (2023)
  • Author(s): Noiri Akito, Takeda Kenta, Nakajima Takashi, Kobayashi Takashi, Sammak Amir, Scappucci Giordano, Tarucha Seigo
  • Organizer: 日本物理学会2023年春季大会
• [Presentation] Building a Tiny Quantum Computer with Silicon Quantum Dots (2023)
  • Author(s): Takashi Nakajima
  • Organizer: 22 nd International Conference on Electron Dynamics in Semiconductors, Optoelectronics and Nanostructures
  • Int'l Joint Research / Invited
• [Presentation] Rapid single-shot parity spin readout with fidelity exceeding 99 percent (2023)
  • Author(s): Kenta Takeda, Akito Noiri, Takashi Nakajima, Leon C. Camenzind, Takashi Kobayashi, Amir Sammak, Giordano Scappucci, Seigo Tarucha
  • Organizer: Silicon Quantum Electronics Workshop 2023
  • Int'l Joint Research
• [Presentation] Pulse Shaping and Composite Pulses for Single-Qubit Gates in SiGe (2023)
  • Author(s): Patrick Butler, Yi-Hsien Wu, Leon C. Camenzind, Akito Noiri, Kenta Takeda, Takashi Nakajima, Takashi Kobayashi, Seigo Tarucha
  • Organizer: Silicon Quantum Electronics Workshop 2023
  • Int'l Joint Research
• [Presentation] Hamiltonian Phase Error in Resonantly Driven CNOT Gate Above the Fault-Tolerant Threshold (2023)
  • Author(s): Yi-Hsien Wu, Leon C. Camenzind, Akito Noiri, Kenta Takeda, Takashi Nakajima, Takashi Kobayashi, Chien-Yuan Chang, Amir Sammak, Giordano Scappucci, Hsi-Sheng Goan, Seigo Tarucha
  • Organizer: Silicon Quantum Electronics Workshop 2023
  • Int'l Joint Research
• [Presentation] Charge-induced energy shift of a single spin qubit under magnetic-field gradient (2023)
  • Author(s): Takashi Kobayashi, Akito Noiri, Kenta Takeda, Takashi Nakajima, Leon C. Camenzind, Ik Kyeong Jin, Amir Sammak, Giordano Scappucci, Seigo Tarucha
  • Organizer: Silicon Quantum Electronics Workshop 2023
  • Int'l Joint Research
• [Presentation] Identifying the decoherence source of silicon spin qubits based on noise cross-correlation (2023)
  • Author(s): Jun Yoneda, Juan S. Rojas-Arias, Peter Stano, Kenta Takeda, Akito Noiri, Takashi Nakajima, Daniel Loss, Seigo Tarucha
  • Organizer: Silicon Quantum Electronics Workshop 2023
  • Int'l Joint Research
• [Presentation] Active suppression of low-frequency exchange noise in controlled-phase gate for Si/SiGe spin qubits (2023)
  • Author(s): Yohei Kojima, Takashi Nakajima, Akito Noiri, Kenta Takeda, Takashi Kobayashi, Seigo Tarucha
  • Organizer: Silicon Quantum Electronics Workshop 2023
  • Int'l Joint Research
• [Presentation] Characterization of a Flip-Chip Interposer through Photon-Assisted Tunneling in a Double Quantum Dot (2023)
  • Author(s): Ik Kyeong Jin, Takashi Nakajima, Akito Noiri, Kenta Takeda, Leon Camenzind, Yi-Hsien Wu, Misato Taguchi, Takuji Miki, Makoto Nagata, Seigo Tarucha
  • Organizer: Silicon Quantum Electronics Workshop 2023
  • Int'l Joint Research
• [Presentation] Nuclear spin noise in nat Si/SiGe spin qubits (2023)
  • Author(s): Juan Rojas-Arias, Yohei Kojima, Kenta Takeda, Takashi Nakajima, Peter Stano, Jun Yoneda, Akito Noiri, Takashi Kobayashi, Daniel Loss, Seigo Tarucha
  • Organizer: Silicon Quantum Electronics Workshop 2023
  • Int'l Joint Research
• [Presentation] Fabrication and characterization of multiple qubit devices (2023)
  • Author(s): Akito Noiri, Kenta Takeda, Takashi Nakajima, Takashi Kobayashi, Leon C. Camenzind, Amir Sammak, Giordano Scappucci, Seigo Tarucha
  • Organizer: Silicon Quantum Electronics Workshop 2023
  • Int'l Joint Research
• [Presentation] Quantum computing with spin qubits in silicon (2023)
  • Author(s): Takashi Nakajima
  • Organizer: 36th International Microprocesses and Nanotechnology Conference
  • Int'l Joint Research / Invited
• [Presentation] シリコンスピン量子ビットによる量子コンピュータ開発 (2022)
  • Author(s): 中島 峻
  • Organizer: 電気情報通信学会 量子情報技術研究会 QIT46
  • Invited
• [Presentation] 半導体量子コンピュータ研究の現状と展望 (2022)
  • Author(s): 中島 峻
  • Organizer: 電子情報通信学会システムナノ技術に関する特別研究専門委員会
  • Invited
• [Presentation] Correlated charge noise in Si/SiGe quantum dot spin qubits (2022)
  • Author(s): Rojas Arias, Sebastian Juan, Noiri Akito, Stano Peter, Yoneda Jun, Nakajima Takashi, Takeda Kenta, Kobayashi Takashi, Loss Daniel, Tarucha Seigo
  • Organizer: The 24th International Conference on High Magnetic Fields in Semiconductor Physics (HMF-24)
  • Int'l Joint Research
• [Presentation] Coherence improvement of semiconductor spin qubits via active noise cancelling (2022)
  • Author(s): Takashi Nakajima
  • Organizer: The 20th International Symposium on the Physics of Semiconductors and Applications
  • Int'l Joint Research / Invited
• [Presentation] シリコン電子スピン量子ビットにおける高忠実２量子ビット操作 (2022)
  • Author(s): Noiri Akito, Takeda Kenta, Nakajima Takashi, Kobayashi Takashi, Sammak Amir, Scappucci Giordano, Tarucha Seigo
  • Organizer: 日本物理学会 2022年秋季大会
• [Presentation] A shuttling-based two-qubit gate for linking distant silicon quantum processors (2022)
  • Author(s): Noiri Akito, Takeda Kenta, Nakajima Takashi, Kobayashi Takashi, Sammak Amir, Scappucci Giordano, Tarucha Seigo
  • Organizer: 2022 Silicon Quantum Electronics Workshop
  • Int'l Joint Research
• [Presentation] Siスピン量子ビット測定に適した超伝導増幅器の試作と評価 (2022)
  • Author(s): 小林嵩
  • Organizer: 日本物理学会 第77回年次大会
• [Presentation] シリコン３ビット量子プロセッサーのユニバーサル制御 (2022)
  • Author(s): 中島峻
  • Organizer: 日本物理学会 第77回年次大会
  • Invited
• [Presentation] 半導体電子スピン量子ビットの高速量子状態制御 (2021)
  • Author(s): 中島峻
  • Organizer: 東京大学物性研究所ワークショップ「第２回ナノスケール物性科学の最先端と新展開」
  • Invited
• [Presentation] シリコンスピン量子ビットによる量子情報処理 (2021)
  • Author(s): 中島峻
  • Organizer: 応用物理学会量子情報工学研究会「量子情報工学の最前線」
  • Invited
• [Presentation] Universal quantum gate fidelity exceeding the fault-tolerance threshold in silicon (2021)
  • Author(s): Akito Noiri
  • Organizer: Silicon Quantum Electronics Workshop
  • Int'l Joint Research
• [Presentation] Three-qubit quantum error correction using electron spins in silicon (2021)
  • Author(s): Kenta Takeda
  • Organizer: Silicon Quantum Electronics Workshop
  • Int'l Joint Research
• [Presentation] Quantum measurement and control of silicon spin qubits (2021)
  • Author(s): Takashi Kobayashi
  • Organizer: The 5th Symposium for The Core Research Clusters for Materials Science and Spintronics, and the 4th Symposium on International Joint Graduate Program in Materials Science
  • Int'l Joint Research / Invited
• [Presentation] Shuttling-based controlled-phase gate in silicon (2021)
  • Author(s): Akito Noiri
  • Organizer: 24th International Conference on Electronic Properties of TwoDimensional Systems (EP2DS24)
  • Int'l Joint Research
• [Presentation] Charge noise in Si/SiGe quantum dot spin qubits (2021)
  • Author(s): Rojas-Arias S Juan
  • Organizer: The 11th Workshop on Semiconductor/Superconductor Quantum Coherence Effect and Quantum Information
• [Presentation] Toward autotuning of spin qubits in semiconductor quantum dots (2021)
  • Author(s): Yoshihiro Uehara
  • Organizer: The 11th Workshop on Semiconductor/Superconductor Quantum Coherence Effect and Quantum Information
• [Presentation] Quantum error correction with spins in silicon (2021)
  • Author(s): Kenta Takeda
  • Organizer: The 11th Workshop on Semiconductor/Superconductor Quantum Coherence Effect and Quantum Information
• [Presentation] シリコン3量子ビットプロセッサー(I) (2021)
  • Author(s): 野入亮人
  • Organizer: 日本物理学会第76回年次大会
• [Presentation] シリコン3量子ビットプロセッサー(II) (2021)
  • Author(s): 武田健太
  • Organizer: 日本物理学会第76回年次大会
• [Presentation] スピン量子ビットのための電荷計のフィードバック制御 (2021)
  • Author(s): 上原義裕
  • Organizer: 日本物理学会第76回年次大会
• [Presentation] シリコン量子ドットにおける電子スピン量子非破壊測定 (2020)
  • Author(s): 米田淳
  • Organizer: 日本物理学会2020年秋季大会
• [Presentation] 量子ドット高周波反射測定のノイズ解析 (2020)
  • Author(s): 篠﨑基矢
  • Organizer: 日本物理学会2020年秋季大会
• [Presentation] ベイズ手法による量子ドット電荷状態推定のノイズ依存性 (2020)
  • Author(s): 武藤由依
  • Organizer: 日本物理学会2020年秋季大会
• [Presentation] 機械学習による量子ドットの電荷状態推定 (2020)
  • Author(s): 中曽拓
  • Organizer: 日本物理学会2020年秋季大会
• [Presentation] 半導体スピン量子コンピュータとマイクロ波 (2020)
  • Author(s): 中島峻
  • Organizer: IEEE MTT-S Kansai Chapter 「量子技術とマイクロ波」ワークショップ
  • Invited
• [Presentation] Measurement-based active reset of a silicon spin qubit (2020)
  • Author(s): Takashi Kobayashi
  • Organizer: 10th Workshop on semiconductor/superconductor quantum coherence effect and quantum information
  • Int'l Joint Research
• [Presentation] Spatio-temporal correlations of dephasing noise in spin qubits (2020)
  • Author(s): Juan Rojas-Arias
  • Organizer: 10th Workshop on semiconductor/superconductor quantum coherence effect and quantum information
  • Int'l Joint Research
• [Presentation] 量子コンピュータとデータサイエンスの世界 (2020)
  • Author(s): 中島 峻
  • Organizer: 秋田県情報産業協会主催 地域連携セミナー
  • Invited
• [Presentation] 高周波反射測定による電界誘起型シリコン量子ドットの高速電荷検出 (2020)
  • Author(s): 野入 亮人
  • Organizer: 日本物理学会第７5回年次大会
• [Presentation] シリコンスピン量子ビットに対する測定ベースの決定性初期化プロトコル (2020)
  • Author(s): 小林 嵩
  • Organizer: 日本物理学会第７5回年次大会
• [Presentation] Coherent control of a GaAs quantum dot spin qubit operated in a feedback loop (2019)
  • Author(s): T. Nakajima
  • Organizer: Compound Semiconductor Week 2019
  • Int'l Joint Research / Invited
• [Presentation] High-speed Manipulation of Si Qubits (2019)
  • Author(s): S. Tarucha
  • Organizer: 2nd Joint ISTDM / ICSI 2019 Conference
  • Int'l Joint Research / Invited
• [Presentation] Si Platform for Developing Spin-based Quantum Computing (2019)
  • Author(s): S. Tarucha
  • Organizer: 2019 Symposia on VLSI Technology and Circuits
  • Int'l Joint Research / Invited
• [Presentation] 単一電子スピンで視る核スピン浴の揺らぎと相互作用 (2019)
  • Author(s): 中島 峻
  • Organizer: 日本物理学会2019年秋季大会
  • Invited
• [Presentation] Fault tolerant Si based quantum computing (2019)
  • Author(s): S. Tarucha
  • Organizer: Japan-Netherlands Quantum Conference
  • Int'l Joint Research / Invited
• [Presentation] Towards quantum teleportation with quantum-dot spin qubits (2019)
  • Author(s): Y. Kojima
  • Organizer: Compound Semiconductor Week 2019
  • Int'l Joint Research
• [Presentation] Quantum teleportation in a triple quantum dot by utilizing Pauli spin blockade (2019)
  • Author(s): Y. Kojima
  • Organizer: Frontiers in Quantum Information Physics and Technology (Int'l Symposium FQIPT)
  • Int'l Joint Research
• [Presentation] High-fidelity resonant operation of a Si-based singlet-triplet qubit (2019)
  • Author(s): K. Takeda
  • Organizer: Silicon quantum electronics workshop 2019
  • Int'l Joint Research
• [Presentation] Si platform for spin-based quantum computing (2019)
  • Author(s): Seigo Tarucha
  • Organizer: International School of Spintronics and Korea-Japan Spintronics Workshop
  • Int'l Joint Research / Invited
• [Presentation] Micro-magnet Techniques for Implementing Spin-based Quantum Computing with Quantum Dots (2019)
  • Author(s): Seigo Tarucha
  • Organizer: Invitation for Taiwan Quantum Computer Workshop
  • Int'l Joint Research / Invited
• [Presentation] Versatile Spin Control for Spin-based Quantum Computing with Quantum Dots (2019)
  • Author(s): Seigo Tarucha
  • Organizer: Taiwan Quantum Computer Workshop
  • Int'l Joint Research / Invited
• [Presentation] Fast CPHASE and QND using Three Spins in a Triple Quantum Dot (2019)
  • Author(s): Seigo Tarucha
  • Organizer: UTokyo-ANU workshop on Quantum Control and Electronic Materials and Devices
  • Int'l Joint Research / Invited
• [Presentation] Coherent control and dephasing of electron spins in quantum dots (2019)
  • Author(s): Seigo Tarucha
  • Organizer: Electroweak interaction and Unified Theories Mesoscopic Physics
  • Int'l Joint Research / Invited
• [Presentation] Towards quantum teleportation with quantum-dot spin qubits (2019)
  • Author(s): Y. Kojima
  • Organizer: UTokyo-ANU workshop on Quantum Control and Electronic Materials and Devices
  • Int'l Joint Research
• [Presentation] シリコン２重量子ドットにおける位相雑音の交差相関 (2019)
  • Author(s): 米田 淳
  • Organizer: 日本物理学会2019年春季大会
• [Presentation] フィードバック制御による電子スピン量子ビットの操作忠実度の向上 (2019)
  • Author(s): 野入 亮人
  • Organizer: 日本物理学会2019年春季大会
• [Presentation] 微小磁石ESRに用いる局所磁場パラメータの解析 (2019)
  • Author(s): T.Ito
  • Organizer: 日本物理学会2019年春季大会
• [Presentation] 電子スピンの量子テレポーテーションに向けた実験 (2019)
  • Author(s): Y.Kojima
  • Organizer: 日本物理学会2019年春季大会
• [Presentation] Quantum control of spin qubits in different encodings in a triple quantum dot (2018)
  • Author(s): T. Nakajima
  • Organizer: China-Japan International Workshop on Quantum Technologies
  • Int'l Joint Research / Invited
• [Presentation] High-fidelity and scale-up of quantum gates in Sibased quantum computing (2018)
  • Author(s): Seigo Tarucha
  • Organizer: DENMARK AND JAPAN STI SEMINAR QUANTUM TECHNOLOGY CREATING THE FUTURE!
  • Int'l Joint Research / Invited
• [Presentation] Quantum Coherence of Spin Qubits with Limited Coupling to the Environment (2018)
  • Author(s): Seigo Tarucha
  • Organizer: International Symposium on Quantum Computing and Quantum Optics
  • Int'l Joint Research / Invited
• [Presentation] Quantum technology for implementing spin based quantum computing with high fidelity and up scaling of qubits (2018)
  • Author(s): Seigo Tarucha
  • Organizer: The 19th International Symposium on the Physics of Semiconductors and Applications (ISPSA)
  • Int'l Joint Research / Invited
• [Presentation] Control with Triple Quantum Dots: Hybrid Spin Qubit, QND, and Coherent Entanglement Transfer (2018)
  • Author(s): Seigo Tarucha
  • Organizer: 20th ICSNN (International Conference on Superlattices, Nanostructures and Nanodevices)
  • Int'l Joint Research / Invited
• [Presentation] High-fidelity spin manipulation toward fault-tolerant quantum computation (2018)
  • Author(s): Seigo Tarucha
  • Organizer: 10th International School and Conference on Physics and Applications of Spin Phenomena in Solids (PASPS10)
  • Int'l Joint Research / Invited
• [Presentation] QND spin readout and cohorent entanglement transfer with a triple quantum dot (2018)
  • Author(s): Seigo Tarucha
  • Organizer: The international workshop “Quantum Information and Correlation in Quantum Dots”
  • Int'l Joint Research / Invited
• [Presentation] Quantum control of spin qubits in different encodings in a triple quantum dot (2018)
  • Author(s): Seigo Tarucha
  • Organizer: Japan-EU Joint Workshop on Advanced Quantum Technology for Future Innovation
  • Int'l Joint Research / Invited
• [Presentation] Spin control with triple quantum dots: three spin qubits, CPHASE, entanglement transfer, and QND (2018)
  • Author(s): Seigo Tarucha
  • Organizer: 4th School and Conference on Spin-Based Quantum Information Processing
  • Int'l Joint Research / Invited
• [Presentation] 隣り合わないスピン量子ビット間の量子もつれ生成 (2018)
  • Author(s): 中島峻
  • Organizer: 第3回 非ノイマン型情報処理へ向けたデバイス技術分科会
  • Invited
• [Presentation] 量子ドットスピンを用いた量子情報 (2018)
  • Author(s): 樽茶清悟
  • Organizer: 量子エレクトロニクス研究会
  • Invited
• [Presentation] Coherent control of a spin qubit in a frequency-locked loop (2018)
  • Author(s): Takashi Nakajima
  • Organizer: 20th International Conference on Superlattices, Nanostructures and Nanodevices (ICSNN2018)
  • Int'l Joint Research
• [Presentation] Coherent coupling between different spin qubit encodings (2018)
  • Author(s): Akito Noiri
  • Organizer: 20th International Conference on Superlattices, Nanostructures and Nanodevices (ICSNN2018)
  • Int'l Joint Research
• [Presentation] A quantum interface between different spin qubit encodings (2018)
  • Author(s): A. Noiri
  • Organizer: 第8回半導体/超伝導体量子効果と量子情報の夏期研修会
• [Presentation] Cross-correlated noise acting on spins in a silicon double quantum dot (2018)
  • Author(s): 米田 淳
  • Organizer: Silicon quantum electronics workshop 2018
  • Int'l Joint Research
• [Remarks] Quantum Functional System Research Group
  • URL: http://qfsrg.riken.jp/index.html
• [Remarks] 隣り合わないスピン量子ビット間の量子もつれ生成に成功
  • URL: http://www.riken.jp/pr/press/2018/20180530_1/
• [Remarks] 半導体量子ビットによるハイブリッド量子計算手法の実証
  • URL: http://www.riken.jp/pr/press/2018/20181129_2/
• [Patent(Industrial Property Rights)] 測定装置、測定方法、製造方法、量子コンピュータ、制御方法、及び、集積回路 (2021)
  • Inventor(s): 中島峻 , 小嶋洋平 , 樽茶清悟
  • Industrial Property Rights Holder: 国立研究開発法人理化学研究所
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 2021-013935
  • Filing Date: 2021